We are one of the biggest manufacturers of Gamma-butyrolactone, N-Methyl-2-Pyrrolidone, 2-Pyrrolidone, PVP K30 K90 K15, PVP Iodine, 1,2-Hexanediol, PVB Resin, PVA Resin etc from China. If you have interest in our products, you are welcome to contact us for more information.